Tuning CPU grace time

Dear Experts,

My requirement is tuning CPU grace time in a PROD ASE (15.7 SP122 on AIX) server

Inputs for your consideration:

sp_sysmon output for Application management:

  Application Statistics Summary (All Applications)
  -------------------------------------------------
  Priority Changes                per sec     per xact   count    % of total
  -------------------------  ------------  ------------  ----------  ----------------------------
    To High Priority                  0.1           0.0          44           1.8 %
    To Medium Priority             4.0           0.7        1196         50.2 %
    To Low Priority                   3.8           0.7        1141         47.9 %
  -------------------------  ------------  ------------  ------------------------------------
  Total Priority Changes         7.9           1.5        2381

  Allotted Slices Exhausted    per sec     per xact   count    % of total
  -------------------------  ------------  ------------  ----------  ---------------------------
    High Priority                           0.0           0.0           0          0.0 %
    Medium Priority                      6.6           1.2        1977      100.0 %
    Low Priority                            0.0           0.0           0          0.0 %
  -------------------------  ------------  ------------  -----------------------------------
  Total Slices Exhausted            6.6           1.2        1977

--Acc to SAP note 1749935, CPU grace time should be 1000 (receommended)

--Current value for cpu grace time is 2500 clockticks = 250 seconds (4.16 minutes)

I "think" this indicates CPU - intensive tasks are getting more CPU time reducing the time kernel checks for "I/O"

Need your valuable insights in deciding the near perfect value for "cpu grace time parameter"

Let me know if you need more information in this case

Rajesh